Blue Flag Iris (Iris virginica) is one of the showiest flowers of early summer. These native wildflowers grow in wet areas-- at the edge of ponds and rivers, in marshes, bogs, floodplains and wet prairies. It can be found across much of the Eastern United States. They've been in bloom in Kalamazoo for a couple of weeks.
I teach economics at Kalamazoo College. My wife is also an economist. We were on sabbatical in Europe for the 2014-15 academic year. (Salamanca, Spain, followed by Oxford, UK.) We were in Uruguay for the 2006-7 academic year.